For everyone, from the Balkans or otherwise, who believes that the only solution to the complex national question on the Balkan Peninsula, and the only safeguard against foreign powers constantly pitting Balkan statelets against one another, is a return to the historic idea of the Balkan Left: a socialist federation of Balkan peoples united against imperialist interference, on a common road towards a new, liberated society.
Some reading on the subject:
http://www.criticatac.ro/lefteast/balkans-for-the-peoples-of-the-balkans/
http://www.revolutionaryhistory.co.uk/87-book-index-contents/199-rh0803.html

Impossibilism is a theory and strategy for bringing about socialism and an interpretation of Marxism that stresses the limited value of political, economic and social reforms within a capitalist economy. It argues that pursuing such reforms is counterproductive as they only strengthen support for the existing system and thereby work to ensure the continuation of the capitalist system, or at the least, impossibilism argues that such reforms are irrelevant to the realization of socialism and should not be a major concern for socialists.

The Mensheviks were a faction of the Russian socialist movement that emerged in 1904 after a dispute in the Russian Social-Democratic Labour Party between Vladimir Lenin and Julius Martov, leading to the party splitting into two factions, one being the Mensheviks and the other being the Bolsheviks. The dispute originated at the Second Congress of that party, ostensibly over minor issues of party organization. Martov's supporters, who were in the minority in a crucial vote on the question of party membership, came to be called "Mensheviks"

The Democratic Socialists of America (DSA) is the largest socialist organization in the United States, and the principal U.S. affiliate of the Socialist International. DSA's members are building progressive movements for social change while establishing an openly democratic socialist presence in American communities and politics.
At the root of our socialism is a profound commitment to democracy, as means and end. As we are unlikely to see an immediate end to capitalism tomorrow, DSA fights for reforms today that will weaken the power of corporations and increase the power of working people. For example, we support reforms that:
decrease the influence of money in politics
empower ordinary people in workplaces and the economy
restructure gender and cultural relationships to be more equitable.

Marxism-Leninism is the theory and practice of the Communists, who uphold the works of Marx, Engels, Lenin and Stalin in the struggle for proletarian revolution, the construction of socialism, and the triumph of communism on a world scale. It is the scientific ideology of the working-class and its vanguard which accomplish these aims.
Marxism-Leninism bases itself on historical and dialectical materialism, taking into account the objective material conditions existant in each country and region. It supports just struggles against imperialism and neo-colonialism whose victories are guaranteed through the leading role of the working-class in said struggles. It supports internationalism as the guiding basis of the foreign policy of the socialist state and in the approach to inter-imperialist conflicts. Marxist-Leninists fight for both democratic and socialist demands and, where necessary in the world, carry out any bourgeois-democratic tasks in tandem with the uninterrupted move over...

"Value criticism (in German Wertkritik) is a branch of postmarxism which is criticizing the capitalistic society. They are following traditions of the Frankfurt School and the critical theory developed under Max Horkheimer. Representatives are Robert Kurz, Roswitha Scholz and Moishe Postone.
Value criticism is taking crucial aspects of Marx critiques of commodity fetishism, commodities and value, while they criticize Marx theory of class struggle and historical materialism. As result the worker class can not necessarily be identified as revolutionary subject. Instead it is pointed out, that labor has to be understood as a historic specific entity and that criticizing capitalism implies not only to criticize the distribution process in capitalism, but also the capitalistic production process and the productive powers. Thus it can be concluded, that real socialism was finally nothing more but state capitalism, where production was still following capitalistic principals. The...

This group was created in order to raise awareness for left anti-semitism disguising itself as anti-zionist. We recognize the uniqueness of anti-semitism and the holocaust and thus support the existence of a state Israel untill communism.
We recognize the anti-semitic tendencies within the palestinian liberation movement and the left and wish to critique them.
We recognize the bourgeois and inherently reactionary character of the state Israel with all its consequences such as racism, bigotry and chauvinism.
We do NOT characterize Israel as a "fascist apartheid settler colonial state".

The World Socialist Movement (WSM) is an international organisation of socialist parties created in 1904 with the founding of the Socialist Party of Great Britain. The member parties share a common classical Marxist worldview and an adherence to socialism defined as a distinct economic system from capitalism. Therefore, the World Socialist parties are held in sharp contrast to Social democratic political parties and Leninist/Marxist-Leninist movements.

In imitation of the Bordiga, Lenin and Kautsky Literati groups, this comrade has found it appropriate to create a group devoted to in-depth study of the political and philosophical writings of G. V. Plekhanov, the Russian Marxist who founded the Emancipation of Labour Group which laid the "theoretical foundations"(Lenin) of the Russian Marxist movement and "took the first step towards"(Lenin) a working-class movement in Russia and played a prominent role in representing the Russian Marxists in the Second International and vigorously fought against Economism and liquidationism, "two different forms of the same petty-bourgeois, intellectualist opportunism"(Lenin) in the RSDLP.

The pre-eminent British socialist, libertarian socialist and founder and still principal figure of the Arts and Crafts movement. Co-founder and chief editor of the Social Democratic Federation 1881 to 1883, Socialist League 1884 to 1890 and the Hammersmith Socialist Society 1890 to his death in 1896. Co-founding father of fantasy fiction. Inspiration for the William Morris Society and its Journal of William Morris Studies published biannually since 1961.
http://www.morrissociety.org/
and
http://www.williammorrissociety.org/

Vexilloligists. A person who studies flags is a vexillologist. Vexillography is the art of designing flags; a person who designs flags is a vexillographer. A person who simply likes, admires, or enjoys flags is a vexillophile. All are welcome here.

Orthodox Trotskyism, so called by both adherents and detractors, is a political current within the broader Trotskyist movement that bases itself on the work of Leon Trotsky and his associates, such as James P. Cannon, who advanced Marxist theory in the direction indicated by Trotsky's work, in opposition to the revisionist theories of Pablo, Shachtman, Cliff and others. Orthodox Trotskyists emphasise the analysis, first outlined by Trotsky, of the Soviet Union as a degenerated workers' state, of the Stalinist bureaucracy as a contradictory stratum, and of the present epoch of the class struggle as being characterised by a deep crisis of leadership that can only be resolved by forging, on a firm basis, a Fourth International of revolutionary Bolsheviks-Leninists. This group is for adherents to the orthodox Trotskyist line, and every comrade who is interested in orthodox Trotskyist theory.